EP0426324B1 - Improved fiber payout machine - Google Patents
Improved fiber payout machine Download PDFInfo
- Publication number
- EP0426324B1 EP0426324B1 EP90311308A EP90311308A EP0426324B1 EP 0426324 B1 EP0426324 B1 EP 0426324B1 EP 90311308 A EP90311308 A EP 90311308A EP 90311308 A EP90311308 A EP 90311308A EP 0426324 B1 EP0426324 B1 EP 0426324B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deflector
- fibre
- payout
- fiber
- bobbin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 title claims description 60
- 239000013307 optical fiber Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000012360 testing method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4457—Bobbins; Reels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/76—Depositing materials in cans or receptacles
- B65H54/80—Apparatus in which the depositing device or the receptacle is rotated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
- F42B15/01—Arrangements thereon for guidance or control
- F42B15/04—Arrangements thereon for guidance or control using wire, e.g. for guiding ground-to-ground rockets
Definitions
- the present invention relates to optical fiber technology. More specifically, the present invention relates to techniques for high speed payout of optical fiber.
- Optical guidance of high speed vehicles involves a payout of optical fiber under conditions which place considerable stress on the fiber.
- numerous techniques have been developed to test the ability of the fiber to withstand such stress.
- the test provides an accurate simulation of the stress condition on the fiber in a real application.
- a payout test has been developed for ground launched optically guided vehicles which involves the high speed payout of optical fiber from a bobbin into the air. A signal is transmitted over the fiber and the desired test measurements are made.
- the fiber exits the payout machine it travels 20 to 50 feet in a straight line before aerodynamic forces cause it to stop almost instantly in mid-air. This causes a snarl of fiber to form in the air before falling to the ground.
- the numerous sharp bends induced in the fiber cause signal attenuation and prevent vehicle control signals from being transmitted over the fiber. This undesirable "bird nesting" of the fiber has been observed to affect signal transmission at payout velocities exceeding 122 m/s (400 feet per second).
- Japanese Patent Application No. 59-217565 discloses a linear material packaging machine.
- Linear material is extruded by a rotary wheel into a nozzle.
- the nozzle is rotatably mounted about a fulcrum and rotary motion, by way of an air flow, is provided at the edge of the nozzle to direct the linear material into the nozzle.
- United States Patent No.4838643 discloses a double clad single mode optical fibre with a depressed inner cladding which exhibits increased resistance to attenuation increases resulting from small radius bends and lower attenuation sensitivity to temperature changes when the mode field diameter is less than 7 microns and the ration of the radius of the inner cladding to the radius of the core is at least 6.5 to one.
- the invention is adapted for use with a payout machine having a payout wheel for pulling optical fiber from a bobbin and dispensing it into the air.
- the invention provides a method and apparatus for deflecting the fiber into a helical pattern as the fiber is payed out from the payout wheel.
- the invention includes a deflector mounted in the path of the fiber which is rotated as the fiber is payed out to generate the helical payout pattern.
- the deflector includes a hollow shaft through which the fiber passes as it being payed out from the payout wheel.
- the hollow shaft includes a tunnel along the length thereof.
- the tunnel has a first portion which directs the fiber along the longitudinal axis of the shaft, and a second portion at an angle with respect to the first portion. The spreading of the fiber by the rotating deflector mitigates signal attenuation.
- the rate of rotation of the deflector is matched to the rate at which fiber is pulled from the bobbin.
- the direction of rotation of the deflector is opposite to the direction at which fiber is pulled off the bobbin. This effectively cancels the twist induced in the fiber during payout from the bobbin and further reduces sharp bends or "pigtails" in the fiber.
- Fig. 1 is a diagram of the improved fiber payout machine 10 of the present invention.
- the machine 10 includes a conventional (pneumatic shoe) payout wheel 12 which pulls optical fiber 14 off a bobbin 16 and dispenses it into the air.
- a particularly novel feature of the invention is the provision of a motorized deflector 18 which includes a deflector 20 and a motor 22.
- the motor 22 drives the deflector 20 so that the fiber 14 is payed out in a helical pattern 32.
- an optional bent rod 33 which may be used to collect the fiber 14 as it is being payed out.
- the bent rod 33 is positioned to lie in the axis of the payout helix 32 and collects the fiber in circles on the ground.
- the motor 22 is shown as a hollow shaft motor although those skilled in the art will appreciate that other motor arrangements may be used to provide rotational drive of the deflector 20.
- One such alternative is to use a belt driven spindle such as is used in a tool post grinder.
- a working model was built utilizing a thermal model no. J-2A grinder.
- the illustrative implementation of the deflector 20 is shown in the sectional view of Fig. 2. As shown in Fig. 2, the deflector 20 is adapted for insertion over the hollow shaft 24 of the motor 22.
- the deflector 20 may be constructed of hard anodized aluminum for good wear characteristics and teflon coated for low friction.
- a tunnel 26 is provided in the deflector 20.
- the tunnel 26 includes a first section 28 which is substantially parallel to the longitudinal axis 29 of the motor shaft 24.
- the tunnel 26 includes a second section 30 which is at an angle ⁇ relative to the first section 28 for redirection of the fiber 14.
- the deflector angle ⁇ is selected to provide the proper diameter helix used on fiber velocity and deflector rotational velocity.
- a 10 degree angle was chosen to provide the required helix diameter.
- the deflector angle ⁇ and the rotational velocity are chosen so that the mean radius of the payout helix 32 is equal to that of the payin helix 34.
- Fig. 3(a) shows a preferred alternative embodiment of the deflector 20.
- the deflector 20 is designed to fit inside a hollow shaft 24.
- the hollow shaft 24 would replace the motor shaft 24 of the motor 22 or the spindle shaft as described above.
- the deflector of Fig. 3(a) has a tunnel 26 with the first and second sections 28 and 30, respectively, as mentioned above.
- Section 28 incorporates a ramp to direct the fiber onto the hollow shaft centerline.
- Section 30 incorporates a circular radius deflector to redirect the fiber.
- Each of these sections is shown in Fig. 3(a).
- Fig. 3(b) is a top view of the deflector 20 of Fig. 3(a) and Fig. 3(c) is a side view, partially in section, of same.
- the second section 30 is a long circularly curved ramp designed to bring the fiber 14 to the deflection point in a very gradual manner. By gently changing the angle of the fiber 14, stress due to deflection is minimized.
- the curved second section 30 is substantially disposed within a small diameter first portion 32 of the deflector 20, while the tip 36 thereof is disposed in a larger diameter second portion 34.
- the small diameter cross-section of the first portion 34 allows for insertion into the hollow motor shaft 24.
- the larger diameter portion 34 extends beyond the hollow shaft and provides an exit for the deflected fiber.
- the fiber 14 is fed from the bobbin 16 through the payout wheel 12 and the deflector 20. Then, the payout wheel 12 is activated and the motor 22 for the deflector 20 is activated. Activation of the motor 22 causes the deflector 20 to rotate about the longitudinal axis of the fiber 14.
- the motor 22 is designed so that the rotational rate of the deflector matches the rotational rate of the fiber helix as it leaves the bobbin. For example, a bobbin 16 having a six inch diameter yields approximately 0.46 m (1.5') of fiber in each turn of the helix 24. Thus, the deflector should rotate one turn for every 0.46 m (1.5') of fiber passing therethough.
- the rotational payout rate of the deflector 20 should match the rotational helix payout rate of the bobbin 16.
- the invention was found to operate satisfactorily with a deflector payout rotational payout rate within ⁇ 50% the helix rotational rate.
- the direction of rotation of the deflector is opposite to the direction at which fiber is pulled off the bobbin. This effectively cancels the twist induced in the fiber during payout from the bobbin and further reduces sharp bends or "pigtails" in the fiber.
- Fig. 4 is an alternative embodiment of the fiber payout machine 10' of the present invention.
- the embodiment of Fig. 4 includes a deflector assembly 20' driven by a belt 21' and motor 22'.
- the deflector assembly 20' is mounted on bearings 23'.
- the deflector assembly 20' includes a flexible plate 40' which is biased by a pivotally mounted weight 42'. Prior to the activation of the motor 22', the plate 40' is straight and the fiber 14' is easily inserted therethrough.
- centrifugal forces cause the weight 42' to bear on the plate 40'. This induces a deflection in the fiber 14' in the manner described above.
- the degree of deflection that is, the size of the payout helix, may be controlled by controlling the rate of rotation of the assembly 20'.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Unwinding Of Filamentary Materials (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Preliminary Treatment Of Fibers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/429,300 US5018678A (en) | 1989-10-30 | 1989-10-30 | Fiber payout machine |
US429300 | 1989-10-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0426324A2 EP0426324A2 (en) | 1991-05-08 |
EP0426324A3 EP0426324A3 (en) | 1992-02-26 |
EP0426324B1 true EP0426324B1 (en) | 1995-11-22 |
Family
ID=23702654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90311308A Expired - Lifetime EP0426324B1 (en) | 1989-10-30 | 1990-10-16 | Improved fiber payout machine |
Country Status (10)
Country | Link |
---|---|
US (1) | US5018678A (ko) |
EP (1) | EP0426324B1 (ko) |
JP (1) | JPH03211400A (ko) |
KR (1) | KR940000089B1 (ko) |
CA (1) | CA2026428C (ko) |
DE (1) | DE69023740T2 (ko) |
ES (1) | ES2079448T3 (ko) |
IL (1) | IL95853A (ko) |
NO (1) | NO904649L (ko) |
TR (1) | TR25794A (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5110061A (en) * | 1990-12-03 | 1992-05-05 | Berry Roger P | Pneumatic reel fiber pay out system |
US5123608A (en) * | 1991-01-10 | 1992-06-23 | Hughes Aircraft Company | Payout tester of a filament dispenser and method therefor |
US5312065A (en) * | 1992-02-05 | 1994-05-17 | Morgan Construction Company | Rod laying head with front and tail end ring control |
WO2013165903A1 (en) * | 2012-04-30 | 2013-11-07 | Adc Telecommunications , Inc. | Cable storage spool with center feed |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US420747A (en) * | 1890-02-04 | Method of coiling wire rods | ||
US428971A (en) * | 1890-05-27 | Device for coiling metal rods | ||
US3270977A (en) * | 1964-05-06 | 1966-09-06 | Western Electric Co | Strand distributing device for open-top containers |
US3964691A (en) * | 1968-11-18 | 1976-06-22 | Deering Milliken Research Corporation | Method and apparatus to treat yarn |
US3667092A (en) * | 1970-06-22 | 1972-06-06 | Deering Milliken Res Corp | Yarn package winder |
GB1290462A (ko) * | 1970-08-04 | 1972-09-27 | ||
US3675864A (en) * | 1970-11-23 | 1972-07-11 | Deering Milliken Res Corp | Novel yarn package and apparatus for producing same |
US3866849A (en) * | 1971-12-22 | 1975-02-18 | Deering Milliken Res Corp | Apparatus for producing a novel yarn package |
DE2709252A1 (de) * | 1977-03-03 | 1978-09-07 | Neumuenster Masch App | Vorrichtung zum ablegen von faserkabeln |
GB2056516B (en) * | 1979-08-20 | 1983-08-03 | Ass Elect Ind | Filament packaging |
JPS59217565A (ja) * | 1983-05-20 | 1984-12-07 | Hitachi Cable Ltd | 線条体のパツク取り機 |
FR2596375B1 (fr) * | 1986-03-28 | 1988-10-14 | Telecommunications Sa | Systeme d'accumulation d'un element filiforme, tel que fibre optique, a vitesses de defilement differentes |
US4765556A (en) * | 1987-05-08 | 1988-08-23 | Morgan Construction Company | Rolling mill laying head |
DE3719908C1 (en) * | 1987-06-15 | 1988-12-22 | Messerschmitt Boelkow Blohm | Missile guide-wire coil |
US4838643A (en) * | 1988-03-23 | 1989-06-13 | Alcatel Na, Inc. | Single mode bend insensitive fiber for use in fiber optic guidance applications |
-
1989
- 1989-10-30 US US07/429,300 patent/US5018678A/en not_active Expired - Fee Related
-
1990
- 1990-09-27 CA CA002026428A patent/CA2026428C/en not_active Expired - Fee Related
- 1990-10-01 IL IL95853A patent/IL95853A/xx not_active IP Right Cessation
- 1990-10-16 DE DE69023740T patent/DE69023740T2/de not_active Expired - Fee Related
- 1990-10-16 EP EP90311308A patent/EP0426324B1/en not_active Expired - Lifetime
- 1990-10-16 ES ES90311308T patent/ES2079448T3/es not_active Expired - Lifetime
- 1990-10-26 NO NO90904649A patent/NO904649L/no unknown
- 1990-10-29 KR KR1019900017332A patent/KR940000089B1/ko not_active IP Right Cessation
- 1990-10-30 JP JP2290972A patent/JPH03211400A/ja active Pending
- 1990-11-30 TR TR90/1009A patent/TR25794A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE69023740T2 (de) | 1996-04-18 |
US5018678A (en) | 1991-05-28 |
KR940000089B1 (ko) | 1994-01-05 |
CA2026428C (en) | 1994-11-15 |
JPH03211400A (ja) | 1991-09-17 |
EP0426324A3 (en) | 1992-02-26 |
TR25794A (tr) | 1993-09-01 |
DE69023740D1 (de) | 1996-01-04 |
NO904649L (no) | 1991-05-02 |
KR910008436A (ko) | 1991-05-31 |
CA2026428A1 (en) | 1991-05-01 |
ES2079448T3 (es) | 1996-01-16 |
NO904649D0 (no) | 1990-10-26 |
EP0426324A2 (en) | 1991-05-08 |
IL95853A0 (en) | 1991-07-18 |
IL95853A (en) | 1993-04-04 |
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